EP 4083223 A4 20240117 - AUTOFLUORESCENCE-BASED LIQUID BIOPSY METHOD TARGETING NUCLEOSOMES FRAGMENTED BY APOPTOSIS
Title (en)
AUTOFLUORESCENCE-BASED LIQUID BIOPSY METHOD TARGETING NUCLEOSOMES FRAGMENTED BY APOPTOSIS
Title (de)
AUF DURCH APOPTOSE FRAGMENTIERTE NUKLEOSOMEN GERICHTETES FLÜSSIGBIOPSIEVERFAHREN AUF DER BASIS VON AUTOFLUORESZENZ
Title (fr)
PROCÉDÉ DE BIOPSIE LIQUIDE BASÉ SUR L'AUTOFLUORESCENCE CIBLANT DES NUCLÉOSOMES FRAGMENTÉS PAR APOPTOSE
Publication
Application
Priority
- JP 2019234330 A 20191225
- JP 2020204585 A 20201120
- JP 2020048764 W 20201225
Abstract (en)
[origin: EP4083223A1] [Problem] Provided is a method for detecting of an autofluorescence Liquid Biopsy of Methylated Fragmented DNA (fragmented nucleosome) released into the blood by cell apoptosis as a disease-related substance[Solution] The inventive method comprises a) a step of capturing the fragmented DNA (fragmented nucleosome) in the analyte as a disease-related substance onto the plasmonic metal meso-crystals ; b) a step of irradiating the captured fragmented DNA (fragmented nucleosome) on the plasmonic metal meso-crystal with excitation light to enhance the autofluorescence by the surface plasmon enhancing effect, and acquiring a fluorescent colony image via a filter in a longer wavelength range than the excitation light filter; c) a step of adopting a pixel that exhibits a brightness greater than or equal to a predetermined threshold value of said fluorescent colony image; d) calculating a ratio of a total area value of pixels greater than or equal to a predetermined threshold value of a different two-wavelength region of the adopted measurement region.
IPC 8 full level
C12Q 1/6806 (2018.01); C12Q 1/6886 (2018.01); G01N 21/64 (2006.01); G01N 21/65 (2006.01)
CPC (source: EP KR US)
C12Q 1/68 (2013.01 - US); C12Q 1/6806 (2013.01 - EP); C12Q 1/6816 (2013.01 - KR); C12Q 1/6883 (2013.01 - KR); C12Q 1/6886 (2013.01 - EP KR); G01N 21/64 (2013.01 - KR US); G01N 33/483 (2013.01 - US); C12Q 2563/107 (2013.01 - KR); C12Q 2563/137 (2013.01 - KR); C12Q 2565/628 (2013.01 - KR); C12Q 2600/154 (2013.01 - EP); G01N 21/6456 (2013.01 - EP); G01N 21/648 (2013.01 - EP); G01N 2021/6421 (2013.01 - EP)
C-Set (source: EP)
Citation (search report)
- [XP] WO 2019245020 A1 20191226 - MYTECH CO LTD [JP]
- [Y] EP 3141888 A1 20170315 - MYTECH CO LTD [JP]
- [Y] WO 2014014956 A1 20140123 - UNIV ARIZONA STATE [US]
- [Y] HIROAKI ITO ET AL: "Silver Nanoscale Hexagonal Column Chips for Detecting Cell-free DNA and Circulating Nucleosomes in Cancer Patients", SCIENTIFIC REPORTS, vol. 5, 21 May 2015 (2015-05-21), pages 10455, XP055343316, DOI: 10.1038/srep10455
- See also references of WO 2021132576A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 4083223 A1 20221102; EP 4083223 A4 20240117; AU 2020411961 A1 20220818; BR 112022012573 A2 20220906; CA 3162973 A1 20210701; CN 114901839 A 20220812; JP 2024116149 A 20240827; JP WO2021132576 A1 20210701; KR 20220136354 A 20221007; MX 2022008008 A 20220721; US 2023050766 A1 20230216; WO 2021132576 A1 20210701
DOCDB simple family (application)
EP 20905211 A 20201225; AU 2020411961 A 20201225; BR 112022012573 A 20201225; CA 3162973 A 20201225; CN 202080090408 A 20201225; JP 2020048764 W 20201225; JP 2021567680 A 20201225; JP 2024080549 A 20240516; KR 20227024473 A 20201225; MX 2022008008 A 20201225; US 202017788852 A 20201225